2. I think it also appeals to a certain audience. It makes them feel open minded to other cultures. There's an emotional bond forming with the story or the people in the story.
Don't forget that the average american speaks only one language, yet considers themselves as part of the country that is creating/keeping world peace and that at the same time the average american consumer spends more on average on consumer goods per capita than any other nation in the world. Add to that, that ad revenue is the US is also disproportionately higher than anywhere else.